We know tonight’s episode of Pretty Little Liars (Season 3, Episode 16: "Misery Loves Company") is bound to be a game-changer for Spoby, and no one has more feelings on the matter than series star Keegan Allen (Toby).Keegan took to Twitter on Tuesday (January 22) to dish on tonight’s episode -- which he also calls his “favorite” -- and all of his feelings. “Tonight is my favorite episode,” he tweeted. “Written directed and produced by @imarleneking. Nothing will prepare you for this. #PrettyLittleLiars epic.” Sure, it’s not like we needed Keegan to tell us how epic “Misery Loves Company” will be, but it’s nice to know he’s as emotionally unprepared for the episode as we are! Aside from Spencer (Troian Bellisario) discovering Toby’s betrAyal, viewers will also get a behind-the-scenes look at “A’s” underground operation as Toby and Mona (Janel Parrish) -- black hoodies and all -- devise a plan to scare the Liars. Catch the episode on Tuesday, January 22, 2013 at 8 p.m. ET/PT on ABC Family.